26 results about "Ammonium nitrate" patented technology

The utility model discloses an ammonium nitrate solution concentration blending reation kettle with anti -explosion function belongs to reation kettle equipment technical field, the utility model discloses a reation kettle body is communicated with the discharge valve at reation kettle body bottom, can carry out even heating to solution through the electric heating plate in the reation kettle body inner wall bottom groove, avoid local temperature too high and cause ammonium nitrate to decompose gas and cause explosion, the cooperation design of stirring rod and top motor can carry out sufficient stirring to ammonium nitrate solution in reation kettle, make solution concentration distribution even. The annular ring and the explosion -proof pipe fixedly connected with the annular ring that reation kettle body surface sets up up and down, effectively enhanced the overall structural strength of reation kettle, the gas outlet pipe of top annular ring and the gas inlet pipe of bottom annular ring mutually cooperate, and the outside cold gas enters the space between the explosion -proof pipe and reation kettle body, and then even cooling is carried out to reation kettle body, and then gas is discharged to the outside from the gas outlet pipe, and the device has the advantages that the explosion -proof effect is good.

The application discloses a method and system for preparing ammonium bifluoride from hydrofluoric acid waste liquid, which comprises the following steps: (1) adding the hydrofluoric acid waste liquid into an electrolytic cell, transporting the electrolytic cell to a first reaction kettle after electrodepositing treatment, adding silicon dioxide, then stirring and reacting, and returning the generated silicon tetrafluoride and hydrofluoric acid into a spray tower to react and then return to the first reaction kettle, and then adding ammonia water to perform neutralization reaction; (2) filtering the solid-liquid mixture I, evaporating and drying the obtained filtrate I to obtain an ammonium nitrate product, and returning the obtained filter cake I to a second reaction kettle, adding ammonia water to adjust the pH value, and then stirring and reacting; (3) filtering the solid-liquid mixture II, returning the obtained filter cake II to the first reaction kettle for reuse, transporting the obtained filtrate II to a reactor, adding hydrofluoric acid to perform reaction, and then performing evaporation and drying treatment to obtain an ammonium bifluoride product. The method is simple in process, low in energy consumption, convenient to operate and convenient for industrialized production and application.

The present application relates to the technical field of combustible substance detection in ammonium nitrate, and provides an automatic device for detecting combustible substance in ammonium nitrate, which comprises a reagent storage unit for storing ammonium nitrate sample, sodium persulfate reagent and phosphoric acid reagent; a CO2 infrared analyzer is connected with the reagent storage unit, the CO2 infrared analyzer can receive the reagent supplied by the reagent storage unit and determine the content of CO2 after the combustible substance in the ammonium nitrate sample is oxidized by the sodium sulfate reagent to form CO2; a controller controls the reagent storage unit to supply the reagent to the CO2 infrared analyzer, and receives and analyzes the content information of CO2 determined by the CO2 infrared analyzer to obtain the content of combustible substance in ammonium nitrate. The automatic device for detecting combustible substance in ammonium nitrate provided by the present application realizes efficient detection of combustible substance by using wet oxidation-infrared quantitative technology.

This application provides a continuous titration method for the sulfuric acid and ammonium nitrate content of silicon etching solution. The continuous titration method includes the following steps: weigh m grams of silicon etching solution sample into a sample bottle, add phenolphthalein indicator, titrate with a first sodium hydroxide standard solution of concentration C1 until a pink color is achieved, and record the volume consumed V1. Calculate the sulfuric acid content. Add neutral formaldehyde solution to the same solution and let it stand for a first preset time to generate a free acid solution. Continue titrating the free acid solution with a second sodium hydroxide standard solution of concentration C2 until the solution turns pink. Gently heat the solution to a preset temperature and maintain this temperature for a second preset time. If the pink color persists, the titration endpoint is determined, and the volume consumed V2 is recorded. Calculate the ammonium nitrate content. This method achieves continuous titration of two components with a single sample, eliminates mutual interference between components, optimizes the endpoint determination method, and thus achieves a simple operation, high accuracy, low sample consumption, and high detection efficiency.

The present application relates to the field of emulsion explosive production, and more particularly to a continuous production equipment and process device for emulsion ammonium oil explosive. The device comprises a fixing part for fixing and packaging the emulsion explosive, and further comprises a moving mechanism for moving the emulsion explosive and cooperating with subsequent mechanisms to cool and assemble the emulsion explosive, the moving mechanism comprising a conveying assembly and a transfer assembly; a first cooling mechanism arranged at the front end of the moving mechanism and used for first cooling the emulsion explosive, the first cooling mechanism comprising a melting assembly and a cleaning assembly; a filling mechanism arranged below the first cooling mechanism and used for filling the fixing part in cooperation with the first cooling mechanism; and a second cooling mechanism arranged behind the first cooling mechanism and used for second cooling the emulsion explosive while placing the emulsion explosive into the fixing part. Through the assembly of the fixing part, the storage life of the emulsion explosive is prolonged.

The present application relates to the technical field of material mixing and conveying, and discloses an efficient mixing and conveying device for ammonium nitrate fuel oil explosive, which comprises a mixing device for mixing materials, a conveying device for conveying the mixed materials, and a support frame, wherein the mixing device and the conveying device are fixedly connected with the support frame, and the conveying device is fixedly connected with the bottom end of the mixing device; the mixing device comprises a mixing barrel fixedly connected with the support frame, a stirring device arranged in the mixing barrel, a feeding hopper for adding materials, and a discharging pipe for conveying the materials in the mixing barrel to the conveying device; the stirring device is provided with a spraying device for spraying liquid, and the spraying device is connected with an atomizing device for conveying the liquid to the stirring device. The present application has the beneficial effects that the spraying device and the stirring device are combined together, liquid is uniformly sprayed at multiple positions during stirring, the stirring efficiency of the materials and the liquid is improved, and the mixing and conveying efficiency of the ammonium nitrate fuel oil explosive is improved.

The present application relates to the field of industrial explosive, and discloses a porous granular ammonium oil explosive and a preparation method thereof.The porous granular ammonium oil explosive comprises an ammonium oil phase and porous granular ammonium nitrate, and the content of the ammonium oil phase is 4-7 wt% based on the weight of the porous granular ammonium oil explosive; the ammonium oil phase comprises Fischer-Tropsch synthesis liquid paraffin, Fischer-Tropsch cracking minus one-line oil, Fischer-Tropsch hydrogenation heavy oil and optional pour point depressant; the Fischer-Tropsch hydrogenation heavy oil is selected from one or two or more of Fischer-Tropsch cracking minus two-line oil, Fischer-Tropsch cracking minus three-line oil and Fischer-Tropsch hydrogenation cracking tail oil; the total weight of the ammonium oil phase is 100 wt%, the content of the Fischer-Tropsch synthesis liquid paraffin is 60-95 wt%, the content of the Fischer-Tropsch cracking minus one-line oil is 2-30 wt%, the content of the Fischer-Tropsch hydrogenation heavy oil is 2-5 wt%, and the content of the pour point depressant is 0-0.5 wt%.The porous granular ammonium oil explosive has high flash point, low pour point and low freezing point, is safer and has longer storage time.

The utility model relates to an ammonium nitrate solution sampling equipment, it includes: density measurement unit, sampling unit, the sampling unit includes the sampling jar, the liquid inlet pipe that one end communicates with the lower part of sampling jar and another end communicates with the connecting pipe and the overflow pipe that one end communicates with the upper part of sampling jar and another end communicates with the connecting pipe, install first electric control ball valve on the liquid inlet pipe, the liquid preparation unit, the liquid preparation unit includes the high tank, the water inlet pipe that one end communicates with the lower part of high tank, the overflow pipe that one end communicates with the upper part of high tank and another end communicates with the water inlet pipe and install first liquid level meter in the high tank, install third electric control ball valve on the water inlet pipe, install fourth electric control ball valve on the overflow pipe, the proportioning unit is installed with second liquid level meter, second thermometer and pH meter, so can realize the continuous measurement to density, and can measure the pH value of the solution after proportioning.

This invention discloses a high-temperature resistant downhole emulsion explosive and its preparation method, belonging to the field of emulsion explosive technology. The emulsion explosive comprises an aqueous phase material, an oil phase material, and a sensitizer, with a mass ratio of (88-96):(4-12):(0.8-2.0). The aqueous phase material, by mass parts, includes the following raw materials: 70-80 parts ammonium nitrate, 4-6 parts sodium nitrate, 5-8 parts urea, 0.1-0.6 parts chitosan quaternary ammonium salt, and 10-20 parts water. The oil phase material, by mass parts, includes the following raw materials: 50-70 parts composite oil phase and 20-40 parts composite emulsifier, which includes Span80 and polyisobutylene succinimide derivatives. This invention involves adding the aqueous phase material to the oil phase material, adding the sensitizer to the emulsion matrix formed by emulsification, and stirring to prepare the emulsion explosive. The emulsion explosive provided by this invention is suitable for use in deep well high-temperature environments and exhibits good high-temperature stability.

This invention provides a boron-based composite energetic material with sodium molybdate assembled with an oxidant and its preparation method. The material includes a boron matrix, an energetic oxidant assembled on the boron matrix, and sodium molybdate dispersed within the energetic oxidant. The boron matrix is ​​boron powder, mono-modified boron powder, or binary modified boron powder. The energetic oxidant is ammonium perchlorate, ammonium nitrate, or potassium perchlorate. The morphology of the boron-based composite energetic material is rough-surfaced spherical particles. The ignition delay time of the boron-based composite energetic material with sodium molybdate assembled with an oxidant prepared by spray drying is 37-30 ms, which is half that of boron powder or surface-modified boron powder; the oxidation peak temperature of this composite energetic material is 560-533℃, which is more than 100℃ lower than that of boron powder or surface-modified boron powder.

The application provides an oxidant-assembled boron-based composite energetic material with high sphericity and a preparation method, comprising a boron matrix, and an energetic oxidant assembled on the boron matrix; the boron matrix is boron powder, monovalent modified boron powder or divalent modified boron powder; the monovalent modified boron powder is obtained by depositing metal oxide on the surface of boron powder by using an atomic layer deposition method; the divalent modified boron powder is obtained by depositing metal oxide and metal molybdenum on the surface of boron powder by using an atomic layer deposition method; the energetic oxidant is ammonium perchlorate, ammonium nitrate or potassium perchlorate; and the boron-based composite energetic material has a spherical particle shape. The composite energetic material prepared by using a spray drying technology has a short laser ignition delay time, excellent ignition and combustion performance, and has a very good application prospect. The application can simultaneously solve the problems of limited boron powder surface activity, nanoscale uniform composite of boron powder and energetic oxidant, and integrated solution of optimization of spheroidization morphology and improvement of process performance.

The present disclosure provides for an explosive inhibitor composition which can be used to form explosive compositions comprising ammonium nitrate which are less susceptible to unwanted detonations due to the reaction between the ammonium nitrate and pyrite and / or other reactive sulphide minerals. The inhibitor composition comprises at least one component which contributes to the inhibition of this unwanted reaction and improves safety in using such explosive compositions with reactive ground.

The application discloses a controllable-hardness emulsion explosive and a preparation method thereof, and relates to the technical field of industrial explosive preparation. Raw materials include, by weight, 80-102 parts of water-phase materials, 3-7 parts of oil-phase materials, 1-2 parts of emulsifiers, 0.1-1 parts of sensitizers, 0.1-1.5 parts of quick-hardening agents, and 0.25-0.7 parts of catalyst compositions. The water-phase materials include 70-80 parts of ammonium nitrate, 5-7 parts of sodium nitrate and 5-15 parts of water. The oil-phase materials include 2-4 parts of wax and 1-3 parts of fatty acids. The sensitizers contain 0.05-0.5 parts of physical sensitizers and 0.05-0.5 parts of chemical sensitizers. The quick-hardening agent is a silicate. The catalyst composition includes 0.2-0.5 parts of nano tin dioxide microcapsules and 0.05-0.2 parts of gemini surfactants. The nano tin dioxide microcapsules have a core material, an inner layer of ethyl cellulose as a wall material and an outer layer of paraffin as a wall material. The emulsion explosive provided by the application realizes dynamic control of the hardness of the emulsion explosive.

The invention discloses an on-site mixed emulsion explosive for water-containing upward hole blasting and a preparation method thereof, and relates to the technical field of emulsion explosives. The on-site mixed emulsion explosive is prepared from the following raw materials in parts by weight: 75 to 80 parts of ammonium nitrate, 0.4 to 0.8 part of acrylic acid-2-acrylamide-2-methylpropanesulfonic acid copolymer, 0.1 to 0.5 part of thiourea, 0.01 to 0.1 part of acetic acid, 3 to 7 parts of compound oil phase, 0.5 to 1.5 parts of emulsifier and 12 to 20 parts of water. The on-site mixed emulsion explosive disclosed by the invention has high viscosity and strong adhesive force, the problem of'explosive falling 'in an upward hole charging process can be effectively avoided, and the blasting efficiency and the safety are improved.

The present application relates to the field of industrial explosive materials, and discloses a kind of swelling nitramine explosive oil phase material and its preparation method and application.The oil phase material is composed of fischer-tropsch synthesis solid wax, fischer-tropsch synthesis liquid wax and fischer-tropsch synthesis oil, without using petroleum products or adding additional additives, reducing the production of toxic gas after explosive explosion, and using green environmental protection.The preparation method of the oil phase material forms a uniform miscible oil phase material by simply melting and mixing the above components, which is simple, efficient and safe, and suitable for large-scale production.When the oil material is used to prepare swelling nitramine explosive, it can effectively wrap explosive components, improve the flowability of explosive powder, thereby improving the density of swelling nitramine explosive, making the explosive have better explosion performance and use safety;The prepared explosive does not produce sticky and caked phenomenon under the storage condition of higher temperature and humidity, and maintains good explosion performance, and has high practical application value.

This invention discloses an ammonium nitrate rotary drum granulator with coating function. The granulator includes an inclined rotary drum body, inside which a granulation zone, a drying zone, and a coating zone are sequentially integrated along the material travel direction. The granulation zone is equipped with replaceable orifice nozzles and a flow manifold and flow deflector for adjusting particle flow, achieving a wide particle size adjustment range of 1-6 mm. The drying zone uses a porous air distribution plate to introduce hot air, achieving fluidized drying of particles and dust source control. The coating zone is equipped with angle-adjustable paint nozzles, employing a double-layer coating system of primer and topcoat to coat the particles. This invention, through integrated design, replaces the traditional tower granulation and its separate drying and coating processes, solving the problems of high investment costs, limited operational flexibility, easy product agglomeration, and significant dust pollution associated with existing technologies. It achieves low-cost, high-flexibility, high-quality, and environmentally friendly large-scale continuous production of ammonium nitrate granules.

The application discloses an improved liquid-mixed expanded ammonium nitrate explosive and a preparation method thereof. The expanded ammonium nitrate explosive is composed of the following components in percentage by mass: 90-94% of ammonium nitrate, 3-5% of wood powder, 3-5% of integrated composite oil phase, and further including mica powder and polypropylene glycol as additives, wherein the adding amount of the mica powder is 5-20% of the total mass, and the adding amount of the polypropylene glycol is 2-5% of the total mass. The preparation method comprises the following steps: (1) preparing an ammonium nitrate aqueous solution; (2) heating and melting the integrated oil phase; (3) expanding and crystallizing; (4) adding the expanded ammonium oil mixture, the wood powder, the mica powder and the polypropylene glycol into a medicine mixer to be uniformly rolled, mixed and cooled. The mica powder is used in the expanded ammonium nitrate explosive to improve the bulk density and the charge density of the expanded explosive, and the polypropylene glycol is introduced to prevent the segregation phenomenon of the mica powder and the base explosive, so that the stability of the product performance is ensured.

A device for recovering aqueous raw materials for emulsion explosives, in the field of emulsion explosive production equipment, includes: a pneumatic T-shaped three-way ball valve, a jacketed pipe assembly, a water circulation device, and an air pump. The upper end of the pneumatic T-shaped three-way ball valve is fixedly connected to the jacketed pipe assembly, which is fixedly connected to the water circulation device. A one-way valve is installed at the air outlet of the air pump, and the one-way valve is fixedly connected to the pneumatic T-shaped three-way ball valve. This device solves the problem mentioned in the background art: when ammonium nitrate aqueous solution, a raw material for emulsion explosives, is transported to the production process through pipelines, the temperature of the ammonium nitrate aqueous solution drops after the production process stops, easily causing crystallization in the pipeline, which can block the pipeline and affect the transport of raw materials.

The present application relates to a kind of preparation methods of triacetoneamine, make the reaction of acetone, ammonia and optional acetone derivative in the presence of strong acid, obtain triacetoneamine crude product;Wherein, material adding sequence is first added acetone and optional acetone derivative, then added ammonia, finally added strong acid;The strong acid is selected from nitric acid, sulfuric acid, phosphoric acid, benzenesulfonic acid, sulfamic acid, dodecylbenzenesulfonic acid, methylsulfonic acid, p-methylbenzenesulfonic acid one or more kinds.The specific strong acid is used instead of traditional ammonium nitrate, effectively avoids the security risk in the storage, transportation and use process due to ammonium nitrate belonging to explosive;By optimizing the feeding sequence and feeding method of material, the corrosion to reaction equipment is significantly reduced.

This application relates to the field of explosives production technology, and in particular to a granular ammonium nitrate (AM) explosive production line and its production method equipped with an ammonium nitrate long-range conveying device. The production line includes a feeding workshop, a mixing workshop, and a packaging workshop arranged sequentially at intervals. The feeding workshop is equipped with a closed long-range pneumatic conveying mechanism, a feeding hopper, an ammonium nitrate screw conveyor, and a vertically arranged bucket elevator. The mixing workshop is equipped with a double-screw mixer, a first quantitative screw conveyor, a second quantitative screw conveyor, and a substrate cart. A finished product screw conveyor is also installed between the mixing workshop and the packaging workshop. The packaging workshop is equipped with a weighing bagging machine, a weighing sewing machine, a bag pushing machine, and a double-track belt conveyor. The granular AM explosive production line and its production method equipped with the ammonium nitrate long-range conveying device of this application require relatively low initial investment. The entire production process is continuous, and after packaging, automatic weighing and sorting of qualified products can be achieved, which is beneficial for the efficient and continuous production of granular AM explosives.

The utility model relates to a kind of modified ammonium oil explosive unqualified product rework equipment, including two support frames, three limit rings are commonly provided between two the support frames, the receiving frame is provided in the limit ring inner cavity, the limit ring left and right sides are all provided with two first threaded holes, the device is placed in modified ammonium oil explosive conveyor belt side, elastic ring cooperation U-shaped plate is limited to conveying swing plate, conveying swing plate side is placed in the bottom of conveyor belt, conveyor belt is annularly arranged, there is an outlet for collecting unqualified products, unqualified products will be dropped into the surface of conveying swing plate by conveyor belt, baffle is limited to unqualified products, unqualified products fall into the adjacent receiving frame inside, when the lowermost receiving frame is collected, empty receiving frame is placed in the middle limit ring inside, when the middle receiving frame is collected, empty receiving frame is placed in the upper limit ring inside, to concentrate on the collection of unqualified products.

The application discloses low-temperature-resistant emulsion explosive and a preparation method thereof, and relates to the technical field of emulsion explosive. The emulsion explosive comprises the following raw materials in parts by weight: 500-1000 parts of ammonium nitrate, 50-100 parts of sodium nitrate, 5-15 parts of a surfactant, 30-50 parts of a composite wax, 10-20 parts of an emulsifier, 80-120 parts of water, 1-3 parts of modified nano silicon dioxide and 10-30 parts of a sensitizer. The surfactant is cocamide propyl betaine. The emulsifier is composed of polyisobutylene succinimide and xylitol oleate gemini emulsifier. Through the action of the emulsifier and the modified nano silicon dioxide, the structural maintaining capacity of the emulsion matrix under low-temperature conditions and the anti-water separation and anti-coalescence performance are remarkably improved. The added surfactant can also act on the modified nano silicon dioxide, so that the low-temperature resistance of the emulsion explosive is further improved.